| /* |
| * i2c-smbus.h - SMBus extensions to the I2C protocol |
| * |
| * Copyright (C) 2010 Jean Delvare <jdelvare@suse.de> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
| * MA 02110-1301 USA. |
| */ |
| |
| #ifndef _LINUX_I2C_SMBUS_H |
| #define _LINUX_I2C_SMBUS_H |
| |
| #include <linux/i2c.h> |
| #include <linux/spinlock.h> |
| #include <linux/workqueue.h> |
| |
| |
| /** |
| * i2c_smbus_alert_setup - platform data for the smbus_alert i2c client |
| * @alert_edge_triggered: whether the alert interrupt is edge (1) or level (0) |
| * triggered |
| * @irq: IRQ number, if the smbus_alert driver should take care of interrupt |
| * handling |
| * |
| * If irq is not specified, the smbus_alert driver doesn't take care of |
| * interrupt handling. In that case it is up to the I2C bus driver to either |
| * handle the interrupts or to poll for alerts. |
| * |
| * If irq is specified then it it crucial that alert_edge_triggered is |
| * properly set. |
| */ |
| struct i2c_smbus_alert_setup { |
| unsigned int alert_edge_triggered:1; |
| int irq; |
| }; |
| |
| struct i2c_client *i2c_setup_smbus_alert(struct i2c_adapter *adapter, |
| struct i2c_smbus_alert_setup *setup); |
| int i2c_handle_smbus_alert(struct i2c_client *ara); |
| |
| #endif /* _LINUX_I2C_SMBUS_H */ |